<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
	<meta http-equiv="Content-Type" content="text/html;charset=UTF-8">
	<title>demo7</title>
	<script type="text/javascript">
		for(i=1;i<=6;i++){
			 for(n=1;n<=6-i;n++){    //n=1,n<2,n=3  n=1 
			 	document.write("&nbsp;");
			}
			for(j=1;j<2*i-1;j++){
				document.write("*");
			}
			document.write("<br/>");
		}

	</script>
</head>
<body style="padding-left:200px;">
	
</body>
</html>